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NLB Ip-address conflict!

 
 
Jesper Hansen
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      05-17-2005, 08:13 AM
Hi.

I am having a problem configuring Network Load balancing on two Win2003
servers.

I have for simplicity sake configured the two servers with only one NIC
each using unicast.

My problem actually consists of two problems

1) After i configure the NLB-service i try to assign the "shared"
ip-address in "Advanced TCP/IP settings " I get an "IP-address conflict"
with the other server which - as it should be - also have this
ip-address configured. I have tried everything (I think) and the problem
still remains, any clues??

2) The NLB actually works regardless of the conflict described when I
connect to the web-serves installed. And if I disconnects one of the
servers from th network the other server replies to all of the
connections - great.
BUT, if I restarts the server and it then tries to reconnect to the
"Cluster" the "cluster" refuses to accept connections for 15-30 min.
after the restart. Unacceptable!
I guess/hope that this problem stops when 1) is solved, other wise it is
definitely a show stopper for us.

Configuration:


My Ip-config for the two servers:

Server 1:
Ethernet adapter Cluster:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : VMware PCI Ethernet Adapter #2
Physical Address. . . . . . . . . : 02-BF-D4-82-F0-E3
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : xxx.xxx.xxx.227
Subnet Mask . . . . . . . . . . . : 255.255.255.128
IP Address. . . . . . . . . . . . : xxx.xxx.xxx.228
Subnet Mask . . . . . . . . . . . : 255.255.255.128
Default Gateway . . . . . . . . . : xxx.xxx.xxx.254
DNS Servers . . . . . . . . . . . : 195.184.44.34
195.184.44.18

Cluster Conf:


Current time = 17-05-2005 10:06:44
ParametersVersion = 4
VirtualNICName =
AliveMsgPeriod = 1000
AliveMsgTolerance = 5
NumActions = 100
NumPackets = 200
NumAliveMsgs = 66
ClusterNetworkAddress = 02-bf-d4-82-f0-e3
ClusterName = nlb.domain.com
ClusterIPAddress = xxx.xxx.xxx.227
ClusterNetworkMask = 255.255.255.128
DedicatedIPAddress = xxx.xxx.xxx.228
DedicatedNetworkMask = 255.255.255.128
HostPriority = 7
ClusterModeOnStart = STARTED
PersistedStates = NONE
DescriptorsPerAlloc = 512
MaxDescriptorAllocs = 512
TCPConnectionTimeout = 60
IPSecConnectionTimeout = 86400
FilterICMP = DISABLED
ScaleSingleClient = 0
NBTSupportEnable = 1
MulticastSupportEnable = 0
MulticastARPEnable = 1
MaskSourceMAC = 1
IGMPSupport = DISABLED
IPtoMcastIP = ENABLED
McastIPAddress = 0.0.0.0
NetmonAliveMsgs = 0
EffectiveVersion = V2.1
IPChangeDelay = 60000
IPToMACEnable = 1
ConnectionCleanupDelay = 300000
RemoteControlEnabled = 0
RemoteControlUDPPort = 2504
RemoteControlCode = 0x0
RemoteMaintenanceEnabled = 0x0
CurrentVersion = V2.4
InstallDate = 0x42832430
VerifyDate = 0x0
NumberOfRules = 1
BDATeaming = DISABLED
TeamID =
Master = DISABLED
ReverseHash = DISABLED
IdentityHeartbeatPeriod = 10000
IdentityHeartbeatEnabled = ENABLED
PortRules
Virtual IP addr Start End Prot Mode Pri Load
Affinity

ALL 0 65535 Both Multiple Equal S


Server 2:

Ethernet adapter Cluster:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : VMware PCI Ethernet Adapter
Physical Address. . . . . . . . . : 02-BF-D4-82-F0-E3
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : xxx.xxx.xxx.227
Subnet Mask . . . . . . . . . . . : 255.255.255.128
IP Address. . . . . . . . . . . . : xxx.xxx.xxx.231
Subnet Mask . . . . . . . . . . . : 255.255.255.128
Default Gateway . . . . . . . . . : xxx.xxx.xxx.254
DNS Servers . . . . . . . . . . . : 195.184.44.34
195.184.44.18

Cluster conf:


Current time = 17-05-2005 10:03:56
ParametersVersion = 4
VirtualNICName =
AliveMsgPeriod = 1000
AliveMsgTolerance = 5
NumActions = 100
NumPackets = 200
NumAliveMsgs = 66
ClusterNetworkAddress = 02-bf-d4-82-f0-e3
ClusterName = nlb.domain.com
ClusterIPAddress = xxx.xxx.xxx.227
ClusterNetworkMask = 255.255.255.128
DedicatedIPAddress = xxx.xxx.xxx.231
DedicatedNetworkMask = 255.255.255.128
HostPriority = 1
ClusterModeOnStart = STARTED
PersistedStates = NONE
DescriptorsPerAlloc = 512
MaxDescriptorAllocs = 512
TCPConnectionTimeout = 60
IPSecConnectionTimeout = 86400
FilterICMP = DISABLED
ScaleSingleClient = 0
NBTSupportEnable = 1
MulticastSupportEnable = 0
MulticastARPEnable = 1
MaskSourceMAC = 1
IGMPSupport = DISABLED
IPtoMcastIP = ENABLED
McastIPAddress = 0.0.0.0
NetmonAliveMsgs = 0
EffectiveVersion = V2.1
IPChangeDelay = 60000
IPToMACEnable = 1
ConnectionCleanupDelay = 300000
RemoteControlEnabled = 0
RemoteControlUDPPort = 2504
RemoteControlCode = 0x0
RemoteMaintenanceEnabled = 0x0
CurrentVersion = V2.4
InstallDate = 0x4283511B
VerifyDate = 0x0
NumberOfRules = 1
BDATeaming = DISABLED
TeamID =
Master = DISABLED
ReverseHash = DISABLED
IdentityHeartbeatPeriod = 10000
IdentityHeartbeatEnabled = ENABLED
PortRules
Virtual IP addr Start End Prot Mode Pri Load
Affinity

ALL 0 65535 Both Multiple Equal S


Thnx in advance

Jesper.
 
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